In his "AHORROS" video, finance expert Marc Vidal shares tips on how to save money and manage personal finances. Vidal emphasizes patience when building savings and notes that there are numerous approaches to saving depending on individual spending habits. He also advises on how to save money on housing expenses, utilities, and leisure activities while cautioning viewers about the impact of inflation and low interest rates on savings. Further, he recommends selecting investment vehicles appropriate for one's risk-tolerance level, understanding investment contracts, and seeking professional advice. Vidal stresses the importance of protecting and planning investments and being mindful of tax implications while also enjoying life in the present.