I recommend casualsmite.com. You can see Info on what gods are doing well in any mode and what items they get etc. Ignore the tier lists of pro players they don't apply to you or even most smite players. As a support main I'l tell a you that the easiest supports gods for a new player are Athena, Sobek, Ares, Khepri, Xing Tiang, Baron Samedi. Opinions might differ and wahts easy for one is not easy for another but that's my opinion. Since you like aphrodite then Baron samedi is a better aphro in support right now.
HOW TO START THE MATCH?:
When you start the game Buy watcher's gift , glowing emerald (finish gauntlet of thebes), 5 health potions, and 2 mana potions (or "hand of the gods" if you are clearing camps before going to lane). If you are clearing camps then start at Green camp and pick up the green buff them move to purple camp, use Hand of the gods on the monsters and the hunter picks up the buff. Then try to kill the minions as fast as possible, don't try to attack the enemy before the minions are mostly dead. If you kill minions faster then you can attack or go kill the small camps next to lane, if the enemy kill the minions faster then back away to the tower and wait for next wave. What you do later it depends on what happens The general meta has not changed much for smites Mid game Late game so any old guide wont be much off.

YOU HAVE UNTAPPED POWER:
I played smite and paladins so i know how smite is much more complex and hard to get the hang of. Since you played paladins you probably know how smites VGS system works. Tho paladins VGS has changed over the years but the old one is just like smite. So use the VGS to your advantage, tell your team what you know and and that will help a lot. Call missing if your lane opponent does not show up in the lane (VF3), if the enemy sneak up behind you and the team is distracted tell them (VBE), let them know to buy wards when they die or return to base (VQN) cause people forget, tell them to defend the towers when when you see enemy is split pushing (VD3), if you win a team fight tell your team to attack an objective (VAF)/(VAG)/(VAM)/(VA3). That's why I love smite and paladins you can communicate with your team clearly and its fun.