Refer Arihant chemistry.

Remember formulas by writing them till you get expertise in writing it.

Relate all chemical reactions with real life scenario to get better expertise.

Hope this helps !!!

Hi,

Read the ncert book. If you are not able to learn the reaction write 5 times over and over again. Make one separate copy write those questions which are creating problem and difficult to learn.Read them twice or thrice it will be easy for you. 

Thanks!