Well is there a reason you aren't interested in Theravada?
The best introduction to Buddhism is either The Heart of the Buddha's Teaching by Thich Nhat Hahn or What the Buddha Taught by Rahula Walpola. The former is written by a Vietnamese Zen master and the later by a very important Sri Lankan monk.
For meditation, try , which you can read here.
Otherwise try getting a copy of Bhikkhu Bodhi's In the Buddha's Words which is a collection of the Buddha's actual sayings.
Otherwise, if you have specific questions or just general inquiries, feel free to post a topic or PM me as I was 17 or so when I first discovered Buddhism and I may be able to offer some guidance, at least in pointing you towards the right source.
Good luck, brother in the Dhamma!
Gain and loss, status and disgrace,
censure and praise, pleasure and pain:
these conditions among human beings are inconstant,
impermanent, subject to change.
Knowing this, the wise person, mindful,
ponders these changing conditions.
Desirable things don’t charm the mind,
undesirable ones bring no resistance.
His welcoming and rebelling are scattered,
gone to their end,
do not exist.
- Lokavipatti Sutta