change in atlanta, from tampa to manchester

Can anyone please tell me what to expect doing this route?
I have heard i can check my bags to manchester without collecting them in atlanta. Also do i need to go tbrough security again as i do not have to collect and recheck my bag? Do i just go straight to my gate once in atlanta?
Thanks for your help. I get nervous when i am doing things for the first time.
I have heard i can check my bags to manchester without collecting them in atlanta. Also do i need to go tbrough security again as i do not have to collect and recheck my bag? Do i just go straight to my gate once in atlanta?
Thanks for your help. I get nervous when i am doing things for the first time.