Introducción a Git:

• https://developer.android.com/jetpack/androidx/versions
• https://portal.liferay.dev/participate/continuous-feedback/process
• https://stackoverflow.com/questions/46786486/alpha-beta-snapshot-release-nightly-milestone-release-candidaterc-whe
• https://docs.gitlab.com/ee/user/markdown.html#plantuml
• https://www.atlassian.com/software/sourcetree
• https://squidfunk.github.io/mkdocs-material/getting-started/
• https://stackoverflow.com/questions/29686681/how-to-merge-files-from-one-branchs-directory-into-another-branch

Aplicación en Android:

• https://code.tutsplus.com/es/tutorials/code-an-image-gallery-android-app-with-glide--cms-28207
• https://www.youtube.com/watch?v=EjpX5UT7Gvg&ab_channel=UNIKOMCodeLabs
• https://developer.android.com/training/constraint-layout/motionlayout/examples
• https://romannurik.github.io/AndroidAssetStudio/index.html
• https://stackoverflow.com/questions/1292575/android-textview-justify-text
• https://www.youtube.com/watch?v=SxAZTnFN-To&ab_channel=KikoPalomares
• https://o7planning.org/12699/android-viewpager2
• https://www.youtube.com/watch?v=195RY7jCuZg&ab_channel=DesignSense
• https://www.youtube.com/watch?v=lmCH_v3cngc&ab_channel=iloveui
• https://o7planning.org/12745/android-progressbar

Página Web:

• https://www.impressivewebs.com/demo-files/css-opacity/
• https://stackoverflow.com/questions/4997493/set-opacity-of-background-image-without-affecting-child-elements
• https://stackoverflow.com/questions/12194227/css-backgroundurl-on-external-server
• https://es.stackoverflow.com/questions/185899/ocultar-una-etiqueta-div-en-html
• https://coding-tips.com/php/paginated-responsive-image-gallery/
• https://gist.github.com/shakyShane/4078095
• https://www.creativosonline.org/blog/31-tarjetas-gratuitas-html-css-blogs-e-commerce-mas.html
• https://entredesarrolladores.com/7944/android-salto-de-linea-en-un-textview
• https://www.favicon-generator.org/
• https://www.jasoft.org/Blog/post/PermaLinkaspxguid=f4c37df1-0b5d-414b-85da-b05e3cd
• https://www.quirksmode.org/dom/inputfile.html
• https://www.bufa.es/javascript-contar-numero-de-caracteres-de-un-textarea/
• https://css-tricks.com/snippets/css/a-guide-to-flexbox/
• https://developer.mozilla.org/es/docs/Web/CSS/CSS_Flexible_Box_Layout/Conceptos_Basicos_de_Flexbox
• https://code.tutsplus.com/tutorials/submit-a-form-without-page-refresh-using-jquery--net-59
• https://codepen.io/drehimself/pen/QNXpyp
• https://www.youtube.com/watch?v=enjhlnqaXOE&ab_channel=DataVizForAll