When it comes to sharpening angles, I don't know what "normal" is or should be. There is a lot of conflicting information out there on angles, and it can be difficult to know what is correct for different blades.
What is even more difficult - especially for someone starting out - is trying to decide what angle(s) to use on what tools.
The woodworkers typical solution to that is to experiment, but someone new to handplanes is probably not going to invest in multiple irons/planes just to grind different angles in them and see how they work. Newcomers are figuring out enough things with renovation and initial setup and if you throw multiple grind angles in the mix it can be a daunting task.
Even though I do most of my work with hand tools, I am still very much inexperienced and I know I don't necessarily have the "correct" answers. For the planes I have, I took my cues on blade angles from what manufacturers are shipping on new planes or replacement blades.
I sharpen my bevel up planes (block and low angle smoother) to 25 degrees. Bevel down planes (bench planes) I sharpen at 30 degrees. I don't mess around with micro bevels.
My bench chisels are all ground at 25 degrees, paring chisels at 20 degrees, mortise chisels have a main bevel of 25 degrees with a secondary bevel at 30 degrees for better edge strength.
Lee Valley (Veritas) sells higher angle blades (38 and 50 degrees) for use with their low angle bench planes to help with difficult grained wood, but I have no experience with them. I'd like to, but have other tools that I need more in the near future.
"Good Behavior is the last refuge of mediocrity" -- Henry S. Haskins