Can I save my old iPhone photos somewhere without deleting them on the phone?

I have loads of photos taken from the past four months on my iPhone (around 630 pictures) but this friday I will be taking a lot more because I'm leaving school, So I want to clear my iPhone for more room and less memory taken up for the new photos I want to take of my friends.

Is there a way I can save my old iPhone photos somewhere other than iCloud? (it doesn't work for my laptop) possibly on a memory stick that I can access whenever without accidentally deleting them?

Make a folder on your laptop and store your phone's media items there

Yeah, i would suggest putting them on a memory stick, and maybe label on the front 'do not delete' or something.

Yes - you can plug your phone into your computer, and then copy and paste your pictures into your documents or wherever else you want them. Another thing you can do is store them in iCloud, if you have a newer iPhone with iCloud capability.