How do I start meditating as a beginner?

According to Mahaguru's teachings, the starting point is not a formal sitting technique but building the simple habit of awareness in ordinary daily life, before trying to meditate in a seated session.

Begin with small, everyday moments of awareness

Just as a child learns to write by first holding a pencil and drawing lines before forming letters, awareness has to be built gradually rather than all at once. The teaching suggests choosing a few ordinary actions each day and doing them with full, present attention:

• When you sit down in a chair, actually notice that you have sat in a chair and check how your hands, legs and body feel right now.
• When you brush your teeth, pay attention to that very act, how much toothpaste you use, the motion of brushing, rather than doing it on autopilot.
• When you lock your door leaving the house, or take off your shoes entering it, do that one action consciously, noting that you are doing this now.

The point is to be able to say, honestly, that on this particular action you are definitely present with awareness. Once that habit is established in daily life, you have the ground to move into deeper practice.

When you do sit to meditate

For a formal sitting session, the guidance given is simple: go to a quiet, peaceful place, sit comfortably (chair, floor, bed, it doesn't matter where), keep your head, neck and back straight, and settle your body before closing your eyes. The posture of the body matters less than keeping the back and head upright.

Why this matters, and a caution worth keeping

Mahaguru's teaching is also clear that meditation is not something to be picked up casually or practiced in isolation from guidance. It is described as something that must be learned properly, in connection with a genuine teacher, because if meditation is practiced wrongly and becomes a habit, that wrong pattern can follow a person through samsara (the cycle of existence) in a way that is harder to undo than ordinary mistakes in life. So while beginning with awareness in daily activities and basic sitting posture is encouraged for everyone, taking up a specific meditation topic (what's called a "Kammaṭṭhāna") is meant to happen with a teacher's guidance, listening to the relevant discourses, and resolving doubts as they come up, rather than improvising alone indefinitely.

As for where you stand right now: there is no need for anxiety about being a complete beginner. Everyone starts from zero, including those from a different faith, culture or background. The usual path is to begin by listening to a genuine spiritual teacher or teaching, building what the teaching calls grounded confidence through actual inner experience, rather than needing to have faith or skill in advance.