Buy in stages, that's the key, especially with the market the way it is at the moment. Take advantage of any price drops to build a bigger portfolio, so always keep fiat in reserve, just drip feed into the market. Buy low and sell high is always the way to go, but who knows where the low is. I thought we were at the low back in March and look what the market's done since then. Hoping we are at, or at least near it now; the market does seem to be steadying somewhat, but the rough ride is far from over. Good luck.