What is a Buddha? Is the real Buddha the one appearing in a thangka with golden face and sitting in a full lotus position?

That is only a partially real Buddha. In the view of Mahayana, the Nirmanakaya (Emanation Body) and the Sambhogakaya (Bliss Body) are the manifestations of the Buddha in order to liberate ordinary people and bodhisattvas of the first to the tenth bhumi, respectively.   The Nirmanakaya is for the Buddha to communicate with ordinary people. Although Buddha-nature exists within the mind of every sentient being, the Dharmakaya (Truth Body) of the Buddha is rendered powerless to those who have not attained realization and thus must rely on the Nirmanakaya and the Sambhogakaya of the Buddha for guidance to enlightenment. However, neither the Nirmanakaya nor the Sambhogakaya is the true Buddha, only the Dharmakaya, the union of wisdom and compassion, is.

~Depicted from THE RIGHT VIEW - Buddhism—the Definition

A lot of people opt for a life in the middle whereby there is neither great suffering nor happiness – a relatively placid life in which they can also practice the Dharma. However, an ordinary life such as this is not necessarily long-lasting. We cannot avoid the eight types of suffering, including birth, aging, illness, and death, and may even encounter great vicissitudes in life. Without the Dharma, how do we confront these circumstances?

~Depicted from ARE YOU READY FOR HAPPINESS - How to Face Suffering and Happiness-How to Face Happiness

As a Chinese saying goes, newborn calves are not intimidated by tigers. Similarly, children are not afraid of fire. It is not because calves and children are particularly brave but they are ignorant. It is a matter of not knowing what to be afraid of. Those who claim not to have fear of death are mostly in this category.

~Depicted from THE HANDBOOK'S FOR LIFE JOURNEY - On Death And Rebirth-Understanding Death

The two kinds of transgression are the five actions of immediate consequence and repudiation of the Dharma. Amitabha Buddha also said all sentient beings in the Saha world with absolute faith in him can be born in Western Pure Land, unless they have committed the five actions of immediate consequence and repudiated the Dharma. All other transgressions like taking life, stealing, etc., even actions that are more serious, can be purified through devotion and recitation of the buddha’s name. Only these two transgressions cannot be eradicated, so we must distant ourselves from them.

~Depicted from GATEWAY FROM VAJRAYANA PATH - Sutra and Tantra: Similarities and

It is clearly stated in the tantric texts that beginners should not do what the yogis do, that yogis not act like realized masters, and realized masters not behave like the Buddha. Beginners aiming to make progress should start by undertaking seriously the practices of contemplating the rare and precious human birth, impermanence of all phenomena, suffering of samsara, etc., and adhering to the precepts rigorously.

~Depicted from GATEWAY TO VAJRAYANA PATH - The Parable of a Black Snake

The real objective of our practice is liberation, not rebirth in the higher realms. As such, we need to establish a path to liberation, with the primary requisite being renunciation. All practices that lead to liberation are based on renunciation. Renunciation is extremely important since we cannot progress to methods in subsequent stages without it. The purpose of seeing all contaminated things as suffering is to give rise to a resolution of complete renunciation.

~Depicted from THE FOUR SEALS OF DHARMA - All Contaminated Things are Unsatisfactory

What does “reaching a certain level” mean? By this we mean it is impractical to receive teachings on all of the 84,000 Dharma methods; however, at the very least, we should understand the method we are practicing, why it is practiced this way, and what the final outcome is. To achieve this understanding, we must first spend an appropriate amount of time to listen and reflect on the Dharma.

~Depicted from THE FOUR SEALS OF DHARMA - The Importance of Practice

For example, when we feel strong attachment to a person, his or her every move can make us either happy or sad. During this time, the chances of getting hurt far exceeds that of gaining happiness because once there is attachment, expectation will ensue. If the other party cannot do as wished, it simply adds more unhappy moments to one’s life. This will continue until the relationship is broken and the attachment gone. Conversely, the less we care about certain things, the more likely they can give us a sense of happiness. This is life’s unbreakable natural law.

~Depicted from THE HANBOOK'S FOR LIFE JOURNEY - On The Three Poisons-How to Refute Ignorance

We all have our own view on life; relatively speaking, different ways of looking at things may be correct at certain levels; however, there is only one truth at the ultimate level. Hence, we should get to know the more profound view.

We should know our inner world is truly very miraculous. To visit this world, we rely neither on data nor examination by instruments, but rather on the practices unique to Buddhism. This is not blind faith; it is very real, just as food can satisfy hunger, water can change to ice under freezing temperature.

~Depicted from ARE YOU READY FOR HAPPINESS - Suffering is just a Paper Tiger