Dear Jitendra,

First, you should complete your text book only. The MHT CET 2018 syllabus will be based on class XI and class XII syllabus of Maharashtra State Board of Secondary and Higher Secondary Education. The syllabus of MHT CET 2018 will give 20% weightage to class XI topics and 80% weightage to class XII topics.

Apart, from your text books you can refer to Arihant, Marvel or Target publication. 

As, MHT CET level is raised to JEE Main it is recommended to solve as many as mock test series for your practice.

Good luck!!

There are actually many books you can refer to. Errorless is a pretty good book and has kept a really good standard over the years. But the content in errorless is extensive. So if you're referring it, make sure you're only studying the MHT-CET 2018 portion from it.

You can even refer to NCERT books for PCMB. It has exhaustive data which is really simple to understand and comprehend.

Other publications like Marvel, Objective, Target also provide really good books with a lot of practise questions and solved papers for CET.

It would be best if you any of refer these books and your HSC textbooks. Most of the CET syllabus would be based on your textbook itself. You have ample time till MHT-CET 2018. So pick one of these and get going.