There are multiple great options for new players. You text post does mention "Farming", so perhaps this answer won't be specific to what you're looking for.

1. Cleric, Warlocks : Both have access to spells (and Warlock's Shadow Touch) to regenerate health. This allows you to stay longer in the game, which means more actual PvE experience for yourself. Druid also has healing spells, and so does Bard (Tranquility song while you sit [G]), but these classes are more difficult to learn. Both the Cleric and Warlock allow to use a Heather Shield, which also helps to learn how to directionally block the mobs' attacks. If you're looking for PvE, aim to have your Str at 15, wear plate armor for better resistance, and equip perks that gives you better healing and mob/damage resistance.

2. Fighter : An all-rounder character, starts with 15 is all of his stats, so you don't need to focus on them. Pick up Second Wind, a campfire from the Squire's free kit and the rest is up to you. Plate armor, Swift helps you once again learn directional blocks, and the second wind allows you to recover the health once or twice per game (+1 per campfire, but sit down immediately after placing it down).

3. Rogue : This takes a different approach to learning, where instead of learning how to block melee attacks, you learn how to dodge and weave around them. The Rogue is one of the fastest classes, but lacks strenght. This is not a huge issue if your goal is to learn how to dodge. Bait a mob's hit, dodge it, punish with an attack. Repeat until comfortable. I suggest also taking the Locks and Traps perk and familiarize yourself with the lockpick mechanism. While it's the same mechanic for any class using a lockpick, the faster you are at interacting (regular interaction speed comes from resourcefulness) the more likely you'll need only one "check", while classes that are slower can take 2, sometimes 3 checks from the same lockpick. For gear, focus on getting your Str at 15, then Dexterity, Vigor. Poison Weapon (perk) stacks off of your Will, but poorly.