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Lulu is currently a Tier 1 support champion, and her simple skill composition and great utility make her suitable for beginners. In lane, you can fight alongside your ADC, shielding them or polymorphing enemies. In teamfights, protect your ADC by providing shields and movement/attack speed buffs to allies, and polymorph enemies to disrupt them. The key thing to remember is to use E (Shield) on allies and W (Polymorph) on enemies.

Nami, like Lulu, is also a top-tier utility support champion. Her Q requires skillshots but stuns enemies on hit, and her W heals allies and damages enemies. Her E buffs the ADC, increasing their auto-attack damage, and her ultimate provides an airborne effect. In lane, land Q, then E your ADC and heal with W. In teamfights, buff and heal your ADC, and protect them with Q if enemies dive them.

Pantheon is a recommended champion for beginners who prefer dive-in supports. W allows you to reliably approach and stun enemies, and E lets you block damage while escaping. Q does a thrust attack when tapped and a spear throw when held. His ultimate is useful for joining fights, and in lane, use the W-Q-E combo to trade damage. In teamfights, it's important to use W to stop enemies from diving your ADC.

Vel'Koz is recommended for players who prefer poke supports and is considered easier than Xerath. Q damages enemies or can be split into two projectiles by casting the skill again. W deals area-of-effect damage, and E provides an airborne effect. His ultimate deals continuous damage. In lane, poke with Q from a distance. In teamfights, deal AoE damage and protect your ADC with E. He's vulnerable to being caught out if you misposition, but he can be fun to play once you get the hang of it.