Alright, I first wanna list shortly what I 'know' so far:

• The language I used most so far is probably Java, because my university profs were all circlejerky about it. We had some bigger projects in university where everyone was part of, as in for example a graphical 3D chess game with networking functionality and 1-2 other things like that. I had programming courses for 4 semester in Java and later on we also added Spring and JSF. Somehow it doesn't click for me with Java, I don't really like it, but maybe I'm just weird

• The language I'm probably second confident in, is PHP with HTML/CSS. But this one is on the other hand also kind of limited, especially for the idea I have in mind. We had one course in university and one project, where we had to program a fancy quiz game in groups of 3 people. In private I built a website you could place bets for e-sports just for fun. If I had to pick one language I know which I liked most so far, it would be PHP, but that's sadly not helping in this case.

• I got basic knowledge of C# and Python, for both from edx courses and a little private coding if I needed something in private. I didn't really coded anything big with either of those.

• A couple of other things here and there like SQL for example, but nothing noteworthy

Somehow, I also dislike frameworks, but I don't think in today's programming environment that's really a smart approach, since so much relies on them, I think.

To my idea:

• Couple of my buddies work as freelancers, and they manage their timesheets and invoices for their customers in Excel

• I'd like to write a little program, where you can manage your customers and scroll through the monthly overviews. In those, you can enter your days and the time and a little text field for the description (I think you get the point)

• The program should have an Export to PDF button, which uses a template to create a nice-looking invoice as a PDF, which they can simply print to give to their customers with the monthly overview, the customer and their own data in form of a letter kind of

• The next step would be to put the database from local to a server and have the alternative to remote manage the data from the app (preparation for the next step)

• Next, since freelancers travel a lot, I want them to be able to manage this stuff remote via their phones. Possibilities here could be either a website with a login or an app for Android smartphones. Haven't really thought about or made a decision yet, although I could imagine that an App would be less clumsy to work with

• I want to use git this time, since I haven't used git for any project so far :)

I thought about picking up node.js for that, because it seems so versatile and powerful and I think I could use it for all of my ideas. An application with PHP basically rules out PHP for my idea. Java would be good, too, but I don't know, it didn't click for me so I don't want to use it. C# might be the best way for me, but I wasn't too blown away by it either after the edx course.

Are there any recommendations you guys have? Anything that might be suited better than node.js or would also work? If I could do application, website and app with one language, that would be great. Or should I force myself to use C# even though I thought it was kinda meh?

Thanks for reading and your help!