A Biga is more or less the same as a poolish. It's just pre fermentation to develop flavor. I use both I guess, but always have called it poolish. Great for French and Italian bread.
I prefer my recipes in weights. I convert everything to grams.
I don't do well with recipes in cups. It might be my fried little brain causing that, but hell, our cups and measures are bigger than yours. Messed up many a batch of brownies because of that. Ate'm anyway.🥴
a US Cup is 240ml (or 8.45 imperial fluid ounces.) This is slightly different from an Australian, Canadian and South African Cup which is 250ml
a US liquid tablespoon is approximately 14.8 ml (0.50 US fl oz), a European, United Kingdom and Canadian tablespoon is exactly 15 ml (0.51 US fl oz), and an Australian tablespoon is 20 ml (0.68 US fl oz).