Reading articles that are "above our heads" is one way that we learn and grow as scholars. Don't be afraid to tackle a "hard" article. You'll be surprised at what you can do!
Here's a more introductory-level option for reading a scientific paper:
1. Take a first pass over the article
2. If the article looks like something you might want to use, put it aside for a day or so.
3. Read the article again, following the steps above, but this time use your favorite methods for active reading:
4. You may need to read an article three or four (or more) times, but that's OK! The secret is to give yourself enough time to read, re-read, and absorb the information.
5. Your instructor or a librarian are happy to help you interpret articles.