welcome 2 da forum dear.
well i ll suggest u 2 go 4 the book of PROF. MUHAMMAD RAUF CHOWDHARY (B.A / B.SC)
just 2 ve a knowledge of stats upto the inter level is not sufficient, u ve 2 study it in detail, im looking 4 a gud book on stats which might cover most of the topics. i ll inform u as soon as i ll b able 2 get some.
till then just study from Rauf's book.
hope some other members ll suggest u better than me.
wish u goodluck