stevenmusgrove

Hi All Hope you're all well. I'm new to film and looking to see what i can and cannot do... with regards to pushing film.. i see that i should be able to push ISO 100 film 1 or 2 stops but was wondering if i push one shot by 1 stop do i then have to keep that the same for all other shots on the roll? or can i do some at 100 and others at 200 or 400? I'm using a Yashica Mat 124G and currently Provia 100f Appreciate your help. Steven