If you are currently employed in an area using electronics design, the best thing you could do is find a mentor to direct you. I was very fortunate to have a mentor when I started my career, a fellow employee super-technician who did engineering design without a college degree. His most important advice to me was to continue my part-time studies and get an engineering degree. It took ten long years, in the meantime raising four children and providing an income for my family, but I stuck with it. In addition to my formal studies, I had the opportunity to work as a technician in a well-equipped electronics laboratory. I also had an electronics workbench at home, but the difference between hobby electronics and commercial electronics equipment is huge. I eventually did most of my "hobby" work after-hours at my employer.
Still, I would strongly recommend that you start a home electronics laboratory if you have not done so yet. Begin small and purchase test equipment as you can afford it. The best test equipment is whatever works for you, not the most expensive. There are many bargains on both new and used test equipment to be found on the Internet, but you need to be careful that what you purchase actually works as described by the seller. A warranty-return capability is desirable, whether for replacement or a refund. Some sellers sell equipment "as is" and do not accept returns for replacement or refund. Beware of such sellers.
There is a minimum of equipment you need to get started: a multimeter, a soldering iron and good rosin-core electronics solder (lead/tin 60/40 if you can find it), long-nose or needle-nose pliers, diagonal cutters, screw drivers, nut drivers and small wrenches, a good light for the workbench, a magnifying headset... and components. I started out as a young boy taking apart discarded television sets to salvage parts. I still salvage parts, but the electronics have changed. You need to decide what course you will pursue in a career before choosing a set of home tools and components. In other words: set a goal. As you become older and more experienced, modify your goal as needed to accommodate your interests and circumstances. Read the trade journals and published papers appropriate to your field. Join engineering societies and participate in their activities. Visit libraries and borrow technical books to study at home. Your education did not end with graduation. The purpose of college was to teach you how to learn. A secondary benefit occurs only if you actually learn something.
So, tell us what you want to DO with your life. Maybe someone here can point you in the right direction.