could someone explain t&l?
Thanks

Depends on the context its used.
If you put t&l in any search engine you will get lots of answers. Pick the one that makes you happy.

Computer video cards;
http://www.gamingforums.com/archive/index2.php?t-135692.html
"T&L = Transform & Lighting for those wondering"
http://tech-report.com/reviews/2001q2/tnl/index.x?pg=1

T&L Magazine
http://www.techlearning.com/

T&L (Travel and Leisure) Magazines
www.travelandleisure.com