I'll walk away from the joke opportunity presented by people using terms such as 'RLC' and 'soldier first' in the same sentence
A couple of people have given similar advice to the following:
. The best thing for you to do is visit your local TA barracks. Do not listen to anyone who isn't/hasn't/ or no intention of ever joining up.
They're spot on.
Although, theoretically, an Army Careers Information Office/ Armed Forces Careers Office can advise you on the TA, the only way to really find out more is to go along to your local TA centre...if nothing else, the ACIO / AFCO should be able to tell you when and where to turn up for a chat with your local units (ask about 'National TA' opportunities too. Different to 'Regional TA'. May, or may not, offer you more what you're after than a local 'Regional' unit)..
Nothing wrong with wanting to get qualifications out of joining -most Arms and Services are fully alive to this 'need'....and most have spent considerable time and effort mapping all their military courses into NVQs and other civilian qualifications to try to meet that need.
Also nothing wrong with seeing the Army as a source of steady employment. It is.
.....And don't put too much store in the 'it's a vocation/calling' line. Whilst for many it is, or becomes so, many many people join for no better reason than to get a job.
Worth also pointing out that, as a member of the TA , you will be eligible to apply for 'Full Time Reserve Service' jobs -commitments from a few months to 5 years on Regular terms and conditions of service -including housing.
Finally, not a TA expert, but I'm under the strong impression that the TA 'max commitment' is 220 days per year (rather than the 100 that's been mentioned).
Bottom line. You've probably already decided what you're going to do. Just do it. You won't find greater certainty by asking on a web forum