Firstly, hi I'm new here; secondly, sorry if this has been asked before, but I can't find much similar discussion here or many other places, which I partly suspect is because there isn't a clear answer and everyone has a different situation.
I have no debt and about 20K GBP (~$30K) in total savings, all as cash in savings accounts. Yes, it's a fraction of any realistic goal amount, but it's a start, and it's a pretty good amount for someone of my age (24). I've recently taken a more active interest in ERE and been reading a lot about investments, in particular the Permanent Portfolio, and now seems like a good time to start thinking about investing especially considering the below-inflation interest rates I'm currently earning on my savings. However I'm wondering if it's too early to start now, and when it's generally a good time to start investing rather than just letting the cash pile up. As I say, I'm sure there's no clear cut answer, but I'd be interested in guidelines or opinions.
And a related question - say I invest a chunk of that 20K (keeping some aside in an easily accessible emergency fund of course), what would I do with my monthly savings after that? Let them pile up and invest it all at the end of the year when I rebalance? Investing a small amount every month into a portfolio doesn't seem worth it considering the trading fees etc.. Apologies if the Fail-Safe Investing book covers this, I haven't read it yet.
I guess the big question overall is whether it's worth investing a small amount and building on it, or better to build up a load of cash then invest it.
My situation in brief: working full time and earning enough to save £700 per month and currently trying to increase that amount; I don't have a concrete ERE plan yet but I'm quite sure I'll be doing the career thing and accumulating for the next few years at least. Anything else you want to know, just ask.