(a regular here)
Hi friends br br I've never made a sweater befor... (
Do you want a cardigan? Or a pullover? Do you want to knit "seamless"? Have you ever knit in the round? (Necessary for knitting seamless) consider checking Ravelry for free patterns and filter for "easy" ... Ravelry is free to join.
If boredom is your fear, you could check out a pattern with lacy panels or Fair Isle color work, or some cables..
There are lots of choices to avoid boredom.
The TinCanKnits look super; you can do one in child size, just to get confidence, then go on to...
I just purchased The Sweater Workshop book by Jacqueline Fee because like you, I really want to make a sweater but have hesitated to get started. She starts you out by making a sampler that walks you through a multitude of techniques and stitches that you will run in to making different sweaters. It looks to be about the size of a sleeve so you learn a lot quickly. You might want to take a look at this. I found a used copy on Amazon. As soon as I finish the afghan I've been working on forever I plan to dive in!
I suggest doing a raglan sleeved sweater in stockinette in a small size for a first time. That is complicated enough. A baby sweater would be great for learning but at some point you'll have to learn the difficulty of sizing an adult sweater. Choose whatever interests you the most. But keep it simple! Check your gauge every few inches. Do not be afraid to frog many times. Best of luck and have fun!