Some excellent advice has been posted already.
to simplify, I would first concentrate on Ohm's law & Kirchoff's laws.
explore the properties & differences between AC & DC.
start becoming very acquainted with schematic drawings, especially the variation that
is found among different schools, localities, decades, and plain drawings vs. interactive
software schematics.
Handle the schematics and spend time studying them.
You need to learn the conventions among different industries, especially the way they handle Ground
and whether or not all the wiring is even shown on the drawing.
Ground is one of the things that is most often assumed to be wired symbolically, which can greatly reduce
the drawing's clutter, but you need to be sure you know how to interpret these traditional shortcuts.
Start practically focusing on the difference between a schematic, wiring diagram, assembly drawing, and repair documentation.
start learning about electronic components themselves, you need to recognize what you
see on circuit boards, how to cross-reference devices among manufacturers,
and understand technical specifications of each part which will end up contributing to the
overall performance specification of a complete circuit assembly.
Handle the components and spend time studying them.
You need to understand the markings & color codes, plus tips & tricks for each type of component.
Experiment with them. to the maximum extent possible.
Think about how much you want to be able to assemble circuits (or prototypes) yourself, and what kind
of circuits you might want to experiment with most. If you are going to have significant
interest in traditional through-hole components, then you will benefit quite a bit from HIGHLY superior
hand soldering skills.
If you are going to concentrate on through-hole designs then you will need to work on the hand-soldering that much more,
you really do benefit from hundreds of hours of refined technique.
Use Kester No. 44 solder, it's the last remaining top-performer.
You would be wasting your time using any other solder until you are a technical expert
at knowing why a different formulation or quality might be occasionally needed for a particular project.
Until then develop a baseline using No. 44 so you will be better able to detect the deficiencies
resulting from lesser formulations, such as lead-free, in case you do have to go there.
Wear your safety glasses and have adequate ventilation, but not enough breeze to affect the
cooldown profile of your soldering.
To really get good you need to do it every day.
You can go really far in analog with only hand-soldering.
Pay attention to what you are doing, don't grab the hot end of the stick.
Sure is a lot faster and more effective than solderless breadboarding.
For surface-mount assemblies, you will need oven-based soldering.
For this it is probably best to join with a makerspace if you can, where they already have
a bit of a PCB lab set up.
Your're really going to need to work with surface-mount parts to get very far with digital.
Among so many different branches of electrical study & experimentation, one thing that may
be most in common is Power Supplies. Knowing about power supplies can not hurt you, the more you know the better,
plus add experience to that knowledge.
But consider whether you want to concentrate on Power when realistically you may be buying so many kinds
of inexpensive power modules (especially surplus) rather than designing your own for most projects.
A scrap CRT monitor or old TV to unsolder parts & wire from, a $10 30W radio shack iron + some special-ordered Kester 44,
and you should be able experiment until you have some simple analog circuits under your belt.
You can probably best start out powering little projects with a 9v battery.
hope this helps,
dano