I agree look up youtube vids on basic model building. Your asking a big question that is hard to explain in text. Would be like writing a small book.
Exacto knife, CA glue (like zapp a gap green), decal setting solution, fine grit sand paper and some tools you will need to build any model. More advanced things like filler putty, weathering pigments, and washes are optional for a new builder. You will need paint and primer. Acrylic or enamel, which is up to you. Both have ups and downs. I use only Enamel but many here use only Acrylic.