i have two questions!!!

first one
1) as a begineer what should one start with in tesing!!!

i request moderator or expert members to answer this question which ll be useful to all new to testing!!!

2) is there any levels in testing types
like

unit,integration,system,functionality,acceptance are first level testing some thing like tht

and stress ,sanity,smoke,regression,load comes under system testing

is this right???

if so can someone list the levels of various testing technologies!!!!

thanks & regards
trainee_tester