Tutorials asking for love

There is several tutorials that would need some ❤️
Most of the changes are newcomer-friendly 😄

We created a checklist of the possible contributions on the tutorials: https://galaxyproject.github.io/training-material/faq#how-can-i-get-started-with-contributing

- Galaxy Tips & Tricks
- Data Manipulation
- "Multisample Analysis"
- Questions, Objectives, Key points
- "Using dataset collection"
- Tutorial content
- Questions, Objectives, Key points
- Remove direct link to data library #674
- "Rule Based Uploader"
- Tutorial content
- Key points
- User Interface and Features
- "Understanding Galaxy history system"
- Key points
- Galaxy for Scientists
- Introduction to Galaxy Analyses
- Options for using Galaxy
- Objectives, key points
- IGV Introduction
- Tutorial content
- Questions, Objectives, Key points
- Introduction to Genomics and Galaxy
- Add the trick from #753
- Epigenetics
- "HiCExplorer" #687
- Objectives
- Question boxes
- DNA Methylation data analysis
- Use bigwig instead of bedgraph #705
- Genome Annotation
- "Genome Annotation"
- Tutorial content
- Questions, Objectives, Key points
- Proteomics
- Peptide and Protein ID #847
- Sequence analysis
- Dive into QC
- Add multiQC #85
- Expand explanation
- Dive into mapping
- Expand explanation (SAM, BAM, etc)
- "RAD-Seq Reference-based data analysis"
- Key points
- "RAD-Seq de-novo data analysis"
- Key points
- "RAD-Seq to construct genetic maps"
- Key points
- English #886
- Transcriptomics
- "Reference based"
- Fix DEXSeq #544
- De-novo transcriptome reconstruction with RNA-Seq #902
- Variant analysis
- "Calling very rare variants" #944
- Exome sequencing data analysis #892
- Calling variants in non-diploid systems
- Remove direct link to data library #674
- Galaxy for Contributors and Instructors
- Galaxy for Developers and Admins
- Admin
- Galaxy Database schema
- Tutorial content formatting
- Dev
- Galaxy from a developer point of view
- Tutorial content
- Tool Dependencies and Conda
- Update fleeqtk #866
- Some issues #397
- Tool integration #428

Start with the contribution checklist linked in the issue and choose one specific tutorial item rather than taking on the full list. Read the named tutorial and any linked issues, such as #674, #753, or #866, to determine the requested change. Done means completing one clearly scoped tutorial update from the checklist.

Written by the indexing model from the issue text.