Any triathletes or budding triathletes out there?

I did my first mini tri last year (200m swim/10km bike/ 2km run) which I did in 1.05 (I was 100kg/220 pounds) and wanted to see if anyone had any training or race day pointers they could share with me for this year (tri is in Nov). If I can get fit enough, I really want to do a few more mini tri's and then branch out and do some bigger ones.

TIA

Tam x