How to short crypto?

As a cryptocurrency enthusiast, I'm curious to know the ins and outs of shorting crypto. Could you explain in a concise manner how one can go about shorting digital assets? I understand that it involves borrowing coins from a broker or exchange, selling them at the current price, and then buying them back at a lower price to repay the loan. But I'm interested in knowing the specifics - what platforms offer this service, what are the risks involved, and how does one determine the right time to enter a short position? Additionally, are there any strategies or tips that you could share to make the process more effective?