3D printing is a very enjoyable hobby because the possibilities are endless, and really the only thing limiting what you can do is your imagination.
But so that people get to grips with it at the start and do not give up, it pays to gain some knowledge.
We particularly recommend the 3D courses that Jói at 3Dverk holds at Iðan. You can also get all kinds of help and support on the Facebook page 3D prentun á íslandi.
You may also want to look at the YouTube videos published by Marteinn S. Sigurðsson.
Einar Mikael has also published a book for beginners called “3D prentun fyrir byrjendur” (“3D printing for beginners”) and has started holding beginner courses
As for printers, I strongly recommend Bambulab for beginners; it is easy to use and handles most of the settings itself.
One thing to keep in mind, though: there are plenty of people on the internet who think they know everything about these matters, so be careful about believing everything at the start. A common tip is to point out that there is moisture in the filament, but I think that is rarely the case when it is pointed out. I myself still dry some filaments before using them, just to be safe, e.g. TPU and expensive materials. Then it is certainly not moisture that ruins the print.
I recommend that people start with PLA, PLA Silk or PETG while they gain a bit of experience and courage. Do not use ABS, ASA or similar materials except in a well-ventilated space with an enclosed printer.
Sites we recommend include makerworld.com, run by Bambulab, thingiverse.com, and cults3d.com, where you can buy very nice designs. yeggi.com is a kind of Google for 3D models, which finds content on free sites and on those that sell designs.
It is good to clean the print plate regularly with lukewarm water and washing-up liquid, and always avoid touching it with your fingers, because skin oil prevents the plastic from sticking to the plate.
It is good to have isopropyl alcohol for cleaning the plate. I recommend that people are not shy about using adhesive on the print plate, such as 3D Printing Adhesive from Landu when making either large parts that warp easily on the plate or other parts with a small contact area on the plate.
It is necessary to clean the print plate when switching between materials, e.g. between PLA and PETG. The reason is that these plastics do not bond to each other and repel one another, which prevents adhesion to the plate if any residue is left. This property also means, for example, that the materials can be used as support for each other and it will not stick even if the Z setting is zero.
Do not let failed prints discourage you; it happens to everyone and is part of the learning process.