Charts

Yahoo finance is a good starting point for general research.  There are many different ways  that info is categorized. When you select a stock or fund, you can see everything from the financials, to analyst ratings of the stock. This can be an easy way to sift through a large amount of information at once. Yahoo Finance also allows you to view charts with their interactive platform, and stay up to date on financial news and events.

VectorVest is an application that I have used for quite a while on my phone. It costs $19.99/ mo for the most premium package. What you get is more of a mathematical approach to investing. You are able to see an algorithmically sorted list of stocks, and find exactly what suits your needs. I have watched many of their top stocks become great performers. I would not discount this app's ability to give you an edge in picking your next stock. 

The Wall Street journal is a great resource for current domestic and international events. They also include a concise section about the financial markets on a given day. It is a great resource if you like to stay up to date on current events, and have an edge in the markets. 

A lot of times, your brokerage account will include many additional resources to help you to invest profitably. Some of these brokers include Fidelity, TD Ameritrade, and even Robinhood.  Look into what information and educational content you can find with your current broker. 

YouTube is a public platform, so there can be a wide range of opinionated statements. However, it is great for addressing market sentiment, and seeing new ideas emerge before they are readily discussed. 

Twitter can be a source of immediate news that may affect your investments on a short-term basis. It can also be a good source to address market sentiment.