This introductory textbook, which is positioned at an intermediate level between the more qualitative books at the low end and the many graduate-level standard textbooks, is an accessible introduction to general relativity primarily aimed at undergraduates studying mechanics, dynamics and special relativity. The text provides structured outlines to the concepts and applications of the topic, leading the reader from the basic ideas of relativity, such as the cosmological principle to the Friedmann equation, on to some more advanced ideas such as orbits in the Schwarzschild Geometry. At the end of each chapter there are appropriate problems. A wide-range of classical and modern topics are covered, exploring observational successes and particle physics to explain many popular principles including space-time, redshift, gravity, and fascinating topics such as black holes and dark matter. This timely textbook also provides a section of advanced topics that offers more detailed mathematical approaches and advanced ideas as a basis for further studies to prepare the reader for understanding more specialised texts.