Here are some recent threads that might help:
http://www.scale-models.co.uk/threads/another-question-guys.19700/
http://www.scale-models.co.uk/threads/single-or-double-action.18296/
http://www.scale-models.co.uk/threads/getting-started-with-an-ab-the-plan-so-far.19768/
http://www.scale-models.co.uk/threads/thinning-acriylics.18061/
http://www.scale-models.co.uk/threads/help-please.19513/
http://www.scale-models.co.uk/threads/needle-removal-from-front-or-back.18728/
You need to decide between lacquer or acrylic paint. Traditional Humbrol paint in those little tinlets has a volatile solvent and requires White Spirit or similar to clean brushes, while acrylic paints are water-based. Most modellers paint a primer on the model before painting colours. Many modellers use a brush, and many use an
airbrush instead which requires practice. Keep reading the threads on this forum and ask specific questions. We are here to help.