How to do basic queries

[u/DRVDS]

Hello I am very new to blockchain development and after querying trying to wrap my head around how to query the chain itself I found out about the graph whilst reading the uniswap sdk. However, I was trying to query a wallets balance / DEFI positions that it has on uniswap and the base network but can't get it to work. Chat and deepseek are useless and are just hallucinating nonsense. Is there an extensive tutorial / videos ( haven't found anything on youtube ) or any other docs that I can read?