I have been 3d printing for about 5 years. I now have three 3d printers. so its true most people who buy a 3d printer usually buy another. Here are some things I would tell people starting out.

3d printer tips.
Make sure everything is good and tight. I had issues early on with leveling after every print but I found the right side head arm on my ender 3 was a little loose, after tightening I only have to level after some major maintenance. Get your belts as tight as you can, I like the aftermarket belt tighteners they make it easier.

Bed type, In my experience PLA sticks better to the textured mat, I like the magnetic ones. ABS sticks better to glass. You also may need to raise bed temp if your using a glass bed. I also use a light coat of aqua net hairspray just for good measure.

I like Chep on youtube, website chepclub.com I like his bed leveler gcode and cura profiles. Good info here for ender 3d printers.

I use Cura I have been meaning to try the Prusa slicer. But Cura has plugins to show your plastic cost and my favorite is a plugin to send to Octo print after slicing.

Octo print is awesome but I had issues with my ender 3 because it had an 8 bit board. When printing curves it got wonky because the USB bus is sending information faster than the board can read it. But the silent board upgrade was the best money I’ve spent. I never though my printer was noisy until I installed it.

Every brand of filament and even colors are different You may need to tweak the temp setting

Thanks for the recommendation Ill have to give it a look!

Good tips that came at the price of many hours!

I’m still running my 8 bit MB on the Ender 3. I have thought many times about upgrading it.