If your attitude is based on fear, I suggest holding off until you can let go of that. You are at a high risk of attracting parasites - lesser astral entities that feed on negative emotion - and they can play impostor and waster your time at best.
I strongly suggest first setting up at least one mirror shield, and one ward, and then smudging your space before you start.
Instructions are in the many useful protection tutorial in this thread: this is Magick 101.