1. SLOT AS MANY DIFFERENT ABILITIES AND SKILL LINES AS YOU CAN
When starting out in Vvardenfell, slot as many different abilities from your different Skill Lines as you can in your action / shortcut bar. Even if you don't use the abilities in question, as you gain XP, they will still gain levels for themselves and their associated Skill Lines.
2. PICK UP AND TRY EVERYTHING
While exploring, be sure to pick up and try every type of weapon and armor you find. By equipping and using a weapon, you unlock its Skill Line for future use. When you have equipped three pieces of armor of any one type (Light, Medium, or Heavy) you also unlock its Skill Line. If you'd like to earn levels for a weapon Skill Line, slot one of its abilities in your action bar. Even if you're not using the weapon in question, it will still earn XP and level up!
3. SEEK OUT ADDITIONAL SKILL POINTS
You will gain Skill Points as you level, allowing you to unlock new abilities, but there are other ways you can acquire points:
From Skyshards – You can find Skyshards glowing blue in the wild. Activate them to absorb their power. Activate three of them and you'll receive a new Skill Point!
From unique quests – Some quests grant Skill Points as rewards. Check to see if a quest has an achievement associated with it. If it does, there's a good chance it'll reward you with a Skill Point.
From public dungeon group events – In each of ESO: Morrowind's two public dungeons, there is a group event that can reward you with Skill Points upon completion.
Improving your Alliance Rank – By ranking up in PvP, such as Battlegrounds and the Alliance War, you also earn Skill Points.
4. FIND (AND EAT) FOOD!
Food can provide you with a much-needed buff to your basic attributes or stats. If you're a sneaky sort, you can steal food from tavern kitchens and such, but if you learn the Provisioning Skill Line, you can make your own food. Head to Vivec City to learn how to unlock Provisioning and use a fire to cook up something good!
5. CRAFT LOW-LEVEL GEAR TO FILL GAPS
When playing with a new character, you might not have found enough armor pieces to ensure you are completely covered. Armor pieces between levels 1-14 can be crafted immediately and require no Skill Points be spent. To get started, harvest some resources in the wild and find a crafting station. As you craft, you'll even improve your skills!
6. HIT THEM HARD TO GAIN RESOURCES
If you're having trouble maintaining resources, try and make use of regular Heavy Attacks as part of your regular combat rotation. Not only will you do a large amount of damage, you'll also regenerate some of your resources (Magicka if attacking with a staff, or Stamina if attacking with a bow, sword, axe, dagger, or mace.)
7. UPGRADE YOUR BANK AND INVENTORY SPACE
You will find a lot of items during your adventures in Vvardenfell, so your Bank and Inventory space might be at a premium. To ensure you have enough space for all of your hard-earned loot, talk to a Banker (found near the entrance to Vivec City) to upgrade your Bank space and a Pack Merchant to upgrade your Inventory (found in the Canton of St. Olms in Vivec City.) Upgrading Bank and Inventory space will cost gold.
8. CATCH A RIDE!
Vvardenfell is a huge place, so it's a good idea to make the most out of the island's many travel options. Most major settlements will have Silt Striders (look for the towers), and some (such as Vivic City and Sadrith Mora) will have boatswains. Each one can take you to different locations, making it possible to reach almost every corner of the island without having to walk or ride there first. Don't forget that even as you explore, you'll gain XP!
9. DECONSTRUCT UNWANTED ITEMS
If you have an inventory full of junk, your first instinct might be to simply sell it all. However, if you'd like a quick-and-easy way to improve your crafting Skill Lines, you should deconstruct your unwanted items at Crafting Stations instead. Not only will you improve your crafting skills, but you'll gain some materials, too!
10. DON'T ATTACK THE INNOCENT!
If you keep accidentally attacking innocent NPCs while testing out your abilities, navigate to your Gameplay settings menu and turn on the Prevent Attacking Innocents option. This will ensure you do not accidentally rack up a hefty bounty with the local guards.