This game is a grind. It is meant to be played over a course of years.
As far as supplies are concerned, the biggest boost you will get is to ensure all of your supply buildings are motivated. Unfortunately, production buildings are at the bottom of the list, so that means everything else needs to be motivated first. A city with tons of decorations, will take all your Aid, as both decos and culture buildings will take a motivation every 12 hours. Get rid of all your decorations, and have just enough culture to keep your population enthused.
Make sure you don't have excess population. Early in the game, you should strive to keep your excess population less than the amount a single residential building holds. You also want to make sure that all of your buildings are of your current age. Use whatever residential gives you the highest population per square, and whatever production building gives you the highest supplies per square. Same with Cultural buildings, the highest happy per square and just enough to keep your peeps enthused. This will free up the maximum amount of space for production buildings.
It may seem counter intuitive, but set all of your production buildings to 24 hours. Again, the goal is for them to be motivated every time you collect. Motivated buildings produce double, happy people produce 20% more on top of that. If you've got the Tavern Silver for it, you can also buy a Tavern Supply Boost. Keep in mind that the boost needs to be active when you collect your buildings. It doesn't matter if you had one when you started them, only that you have one active when you collect. A 24 hour boost will give you another 60%, on top of the motivated, happy amount.
To get the Aid you need, you'll also need to work on your friends list. Early in the game, you're matched with other new players and new players drop like flies. You want to dump any players who aren't aiding you daily and replace them with new players who will aid. Although you can only invite 80 players to your friends list, you can have up to 140 friends. This means after you're out of invites, you can still accept friend requests from others.
If you're not already, you need to Aid and visit the Taverns of all your friends and guild mates daily. The only way to get aid and Tavern Silver is from others aiding and visiting you, so Aid and visit others so they'll Aid and visit you. Also work on improving your tavern, all aspects of it, especially the Table Cloth. If you give me a chance to find a Forge Point when I visit, I'll visit every day. If you don't give me a chance to find a FP daily, not only I will not visit, I'll dump you from my friends list.
If you don't plunder, aid your neighbors also, if you plunder, you might consider plundering some supplies, but plundering goods will save you the supplies you'd otherwise spend to produce them.
Bottom line though, FoE is a game of patience designed to be played over years. If you're looking for a fast paced game that you can 'finish' in a few months, FoE is not that game. I've linked a guide that's perfect for beginners, it will both help you start strong, but also reveal some of the complexities of the game. Welcome, good luck, and Happy Forging.