Raspberry Care
So what do I need to know to get the best yield out of my raspberries? What kind of fertilizer do I use? When do I trim and how much do I trim them down? What else should I know?
Hello, Decado. 
If you enter the words raspberry care in the search box at the top of the page, you will find many, many discussions of the ins and outs of raspberry culture. Here is just a small sample of the threads you'll discover:
https://www.helpfulgardener.com/forum/viewtopic.php?t=2076
https://www.helpfulgardener.com/forum/viewtopic.php?t=4494
https://www.helpfulgardener.com/forum/viewtopic.php?t=1583
If you enter the words raspberry care in the search box at the top of the page, you will find many, many discussions of the ins and outs of raspberry culture. Here is just a small sample of the threads you'll discover:
https://www.helpfulgardener.com/forum/viewtopic.php?t=2076
https://www.helpfulgardener.com/forum/viewtopic.php?t=4494
https://www.helpfulgardener.com/forum/viewtopic.php?t=1583