How to Get Gold Club For Free - Travian Guides (2020) <- Video Link
If you prefer it in text, it is very simple.
1. Save the 30 Gold from tutorial
2. Do adventures and sell your items for silver overtime
3. Buy items at low price during night time and sell items at high price during day time
4. Exchange 4000 Silver for 20 Gold
5. You will unlock gold club with the 30 gold you saved from the start.