Hi @Amine_Benbrahim ,
if you are thinking of OCR first. i would like to share the Use case related to pricing.
Price comparison between PDF and ERP:
For each and every year a company change their prices for the Parts or items of their brands. So they will keep all the new price details into one PDF with multiple tables and each and every table have different structure.
The main task is we have to compare the prices in the PDF with the ERP application based on the part number(unique id) and share the result in form of report like whether they are matching with the data available in the application. the report should be in graphical representation like how many part numbers price are different and etc. And also we have to calculate the percentage of increase for each and every product by comparing with the old prices. may be this use case will help you to kick start with the OCR concept. All the best for your learning.