Hi

Yes, Deemed University degree is valid for UPSC examination and for other purposes as well provided  that the university should be recognised by UGC.

You can get the list of deemed universities recognised by UGC by visiting its official page the link for which is provided below

https://www.ugc.ac.in/deemeduniversity.aspx

You can check UPSC eligibility  criteria provided below:-

*You  must  have  a  bachelor's  degree in any, discipline    from a  recognised university.

So, it doesn't matter even if you do your degree from deemed university but yes it should be recognised one

*Minimum  age  limit :-  you  need to  be at least  21  years  old   to be  eligible.

*Maximum  age  limit :-  32 years , also there's 3  year  relaxation on upper age limit for  obc and of  5 years  for sc/st category.

For detailed  information related to UPSC eligibility criteria ,  you can visit our page at

https://competition.careers360.com/articles/upsc-ias-eligibility-criteria/amp

Your UPSC civil services examination consists of three stages

*The first stage of the exam is Preliminary examination (objective )

*The second stage, Mains (written).

*If you manage to clear mains then you are to go through third stage i.e interview/personality test .

Now that,
You are eligible for UPSC examination you can start your preparation

To start your preparation  first of all go well through syllabus  , you can check the complete syllabus at
https://competition.careers360.com/articles/upsc-ias-syllabus

*Make a routine or a time table and try to religiously follow it , take short breaks in between your studies.
*Read newspaper daily and keep yourself updated with the current affairs
*Choose your optional subject wisely , choose the subject you have interest in.
*Make short notes .
*Revise :- there's no point of preparing for the exam if you couldn't recall anything in the UPSC Examination so you should stress on revision as well.
*Solve previous year question papers and mock test papers .
*Also work on your communication skills and personality development as it plays an important role in your interview round

For more tips go through

https://competition.careers360.com/articles/how-prepare-for-upsc-ias

If you have any other doubt then feel free to ask them :) we are always here to help you out and guide you

Thank you