Please Help!

Firstly DO post a summary of your problem in the forum heading and DONT set is is to "Please Help!".   😀
There are thousands of post on this forum and they each need a proper heading, thank you.

You need to use Calandar table with monthly and quarterly offsets.

It is then easy to calculate YTD, MTD, QTD, Previous Year, Previous Month, Previous Quater

For example

Previous quater sales = CALCULATE ( SUM(Sales[Amount]), 'calendar'[quateroffset] = -1)

Do all these training free modules in the play list:-

https://www.youtube.com/watch?v=BtYn1hfdSAM

Thanks for reaching out for help.

I put in a lot of effort to help you, now please quickly help me by giving kudos.

Remeber we are unpaid volunteers and here to coach you with Power BI and DAX skills and techniques, not do the users job for them. So please click the thumbs up and accept as solution button. 

If you give someone a fish then you only give them one meal, but if you teach them how to fish then they can feed themselves and teach others for a lifetime.  I prefer to teach members on this forum techniques rather give full solutions and do their job. You can then adapt the technique for your solution, learn some DAX skills for next time and soon become a Power BI Super User like me. 

One question per ticket please. If you need to extend your request then please raise a new ticket.

You will get a quicker response and each volunteer solver will get the kudos they deserve. Thank you !